To set up a php-fpm status page for the domain do the following.
Create /var/www/vhosts/system/domain.net/conf/php.ini and add this into it:
[php-fpm-pool-settings] pm.status_path = /status
In the Additional nginx directives section for that domain add this:
location ~ ^/status$ { allow 127.0.0.1; deny all; fastcgi_split_path_info ^((?U).+\\.php)(/?.+)$; fastcgi_param PATH_INFO $fastcgi_path_info; fastcgi_pass "unix:///var/www/vhosts/system/pac.domain.net/php-fpm.sock"; include /etc/nginx/fastcgi.conf; }